Investigating P0446 on Your 2022 Acura Integra
A P0446 code on your 2022 Acura Integra indicates an EVAP vent control circuit malfunction. The Integra uses a 1.5L turbocharged VTEC engine shared with the Honda Civic platform. Acura's EVAP system features a canister vent shut valve for vent control, built on Honda's well-proven architecture.
The Acura basic warranty (4yr/50k) should still be active. The powertrain warranty (6yr/70k) provides extended coverage.
Clues and Symptoms
- Check engine light with P0446
- Fuel fill difficulty
- EVAP readiness monitor incomplete
Top Suspects
- Canister Vent Shut Valve Failure (High Likelihood): The primary P0446 component on Honda/Acura. Replacement costs $120–$220 if not warranty-covered.
- Bypass Solenoid Valve Malfunction (High Likelihood): Sticking purge valve disrupts EVAP flow. Replacement runs $100–$200.
- Vent Valve Wiring or Connector (Medium Likelihood): Early-production connector issue. Repair costs $70–$160.
- EVAP Hose Connection (Medium Likelihood): Loose or deteriorated hose on the Civic-based platform. Repair runs $50–$120.
- Gas Cap Seal (Low Likelihood): The #1 EVAP trigger on Honda/Acura vehicles. Replacement is $12–$25.
How to Investigate
Under warranty, go to an Acura dealer for HDS diagnostics. For DIY, try the gas cap first—gas cap seal issues are the most common EVAP trigger on Honda/Acura. Then scan for all codes and inspect the vent valve connector.
Warranty and Cost
The basic warranty (4yr/50k) should be active. The powertrain warranty (6yr/70k) and federal emissions warranty (8yr/80k) provide extended coverage. Under warranty, all repairs are free.
Safe to Drive?
Yes. P0446 doesn't affect your Integra's turbo VTEC performance, CVT or manual transmission, or any driving dynamics.